Boron tribromide → HCID 117992578, compound

Participants

Reaction Steps

To a stirred solution of N,N-Bis-(2-methoxy-ethyl)-4-(5-methyl-1-oxo-1,2-dihydro-isoquinolin-3-yl)-benzamide (40 mg, 0.10 mmol) in CH2Cl2 (2.5 mL) under N2 at −78° C. was added boron tribromide (1M in CH2Cl2, 2.54 mL, 2.54 mmol). The reaction was allowed to warm to RT and stirred for 16 h. The reaction mixture was quenched with H2O and extracted with EtOAc (5 mL) upon which a pale yellow solid precipitated and was filtered off. The aqueous phase was further extracted with CH2Cl2 (5 mL). The combined organics were evaporated to dryness. Product was found to be also present in the aqueous phase and was passed through an Isolute-103 cartridge (500 mg), washing with H2O (4× column volumes). The product was eluted from the column with MeOH (4× column volumes) and evaporated to dryness. The combined crude product was purified by reverse phase preparative HPLC-MS to obtain N,N-bis-(2-hydroxy-ethyl)-4-(5-methyl-1-oxo-1,2-dihydro-isoquinolin-3-yl)-benzamide as a white solid (23 mg, 63%).

Provenance & Evidence